janpan means jampan (an open chair carried by several people). Lexicurio rates it Sui generis — a strength score of 100 out of 100.
Etymology
From Hindi झँपान (jhãpān) and Bengali.
noun
- jampan (an open chair carried by several people).“Oh! here comes a janpan! (a sort of sedan chair carried by four hill men, dressed in loose black clothes, turned up with red, yellow, blue, green, or whatever colour the proprietor likes best) And in the janpan sits a lady - Mrs Apsley, a very pretty, good-tempered, and well-bred little lady.”